Gundam Seed: the Second Protagonist Is so Weak

This is a story that originated with "J." This is a story that unfolds in "seed". This is a story about various guys getting involved. Of course, this is mainly a story to make up for the regrets and unhappiness in my heart. However... The protagonist brought the matter of time travel to the seed from "Mech J", and used his half-baked driving skills and a half-baked method to try to rewrite the tragedy and save the world... Wait a minute, that bird over there - stop for me, I promise not to kill you!